St John is located in Missouri. St John, Missouri has a population of 6,617. St John is less family-centric than the surrounding county with 23.64% of the households containing married families with children. The county average for households married with children is 29.08%.
The median household income in St John, Missouri is $55,231. The median household income for the surrounding county is $72,562 compared to the national median of $69,021. The median age of people living in St John is 39.1 years.
The average high temperature in July is 88.9 degrees, with an average low temperature in January of 23.1 degrees. The average rainfall is approximately 41.7 inches per year, with 13.9 inches of snow per year.
